Flora of North America species comparison

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Astragalus coltonii var. moabensis
Photo is of parent taxon

Moab milkvetch
Stems

strigulose, cinereous, greenish cinereous, or canescent;

from subterranean caudex.
Leaves

odd-pinnate, (2–)3–9 cm;

leaflets (5–)9–17(or 19), blades oblong, cuneate-oblong, or ovate, (3–)5–20 mm, apex obtuse, truncate, or retuse, surfaces brighter green and, usually, less densely pubescent abaxially;

leaflets jointed or joint obscure in distal ones.
Racemes

(6–)10–30-flowered.
Peduncles

(4–)6.5–21 cm.
Legumes

19–35 × (3–)3.5–6 mm;

stipe 5–11 mm.

Astragalus coltonii var. moabensis
Phenology Flowering Apr–Jun.
Habitat Pinyon-juniper and mountain brush communities.
Elevation 1400–2600 m. (4600–8500 ft.)
Distribution
from FNA
AZ; CO; NM; UT; WY
[BONAP county map]
Discussion

Variety moabensis is primarily in the Four Corners region of Apache and Navajo counties in northeastern Arizona, Dolores, Mesa, Montezuma, and Montrose counties in southwestern Colorado, San Juan County in northwestern New Mexico, and Grand and San Juan counties in southeastern Utah. The populations in Sweetwater and Uinta counties in southwestern Wyoming may represent recent introductions due to livestock transport.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Astragalus > sect. Lonchocarpi > Astragalus coltonii
Sibling taxa
A. coltonii var. coltonii
Name authority M. E. Jones: Contr. W. Bot. 8: 11. (1898) — (as coltoni)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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